1/*-
2 * Copyright (c) 2017 Kevin Lo <kevlo@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include "opt_wlan.h"
31
32#include <sys/param.h>
33#include <sys/lock.h>
34#include <sys/mutex.h>
35#include <sys/mbuf.h>
36#include <sys/kernel.h>
37#include <sys/socket.h>
38#include <sys/systm.h>
39#include <sys/malloc.h>
40#include <sys/queue.h>
41#include <sys/taskqueue.h>
42#include <sys/bus.h>
43#include <sys/endian.h>
44#include <sys/linker.h>
45
46#include <net/if.h>
47#include <net/ethernet.h>
48#include <net/if_media.h>
49
50#include <net80211/ieee80211_var.h>
51#include <net80211/ieee80211_radiotap.h>
52
53#include <dev/rtwn/if_rtwnreg.h>
54#include <dev/rtwn/if_rtwnvar.h>
55
56#include <dev/rtwn/rtl8192e/r92e.h>
57#include <dev/rtwn/rtl8192e/r92e_reg.h>
58
59uint32_t
60r92e_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr)
61{
62	uint32_t val;
63
64	val = rtwn_bb_read(sc, R92C_HSSI_PARAM2(chain));
65	rtwn_bb_write(sc, R92C_HSSI_PARAM2(chain),
66	    RW(val, R92C_HSSI_PARAM2_READ_ADDR, addr) &
67	    ~R92C_HSSI_PARAM2_READ_EDGE);
68
69	rtwn_bb_setbits(sc, R92C_HSSI_PARAM2(0), R92C_HSSI_PARAM2_READ_EDGE, 0);
70	rtwn_bb_setbits(sc, R92C_HSSI_PARAM2(0), 0, R92C_HSSI_PARAM2_READ_EDGE);
71	rtwn_delay(sc, 20);
72
73	if (rtwn_bb_read(sc, R92C_HSSI_PARAM1(chain)) & R92C_HSSI_PARAM1_PI)
74		val = rtwn_bb_read(sc, R92C_HSPI_READBACK(chain));
75	else
76		val = rtwn_bb_read(sc, R92C_LSSI_READBACK(chain));
77	return (MS(val, R92C_LSSI_READBACK_DATA));
78}
79
80void
81r92e_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr, uint32_t val)
82{
83
84	rtwn_bb_setbits(sc, 0x818, 0x20000, 0);
85	rtwn_bb_write(sc, R92C_LSSI_PARAM(chain),
86	    SM(R88E_LSSI_PARAM_ADDR, addr) | SM(R92C_LSSI_PARAM_DATA, val));
87	rtwn_bb_setbits(sc, 0x818, 0, 0x20000);
88}
89